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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '19553dc827e9eaae9b8c0688b110ca12ae3ec26f3535f8c740577e56b5c00445' 
  AND token = 'V00erCZnNiE3FprvwhYfp9tHf3pOhPGZiiqf+9/H7f8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}